The "Back To School" episode of Harley Quinn Season 5 offers a new, less problematic take on the origins of Poison Ivy.

In the latest episode of Harley Quinn, the series introduces a villain who played a crucial part in defining Swamp Thing's ...

This is the oldest confirmed use of a mixture comprising two or more plant toxins specifically applied to arrowheads.

Harley Quinn Season 5, Episode 2 shows viewers how Poison Ivy gained her powers and why she turned into an eco-terrorist. But ...

In "The Mess is the Point," Harley and Ivy have two very different roads. Ivy confronts the scientist that lead to her powers ...